Electronics > Projects, Designs, and Technical Stuff
EMI pickup device (mailbag)
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SGI:
Hello Dave's aficionados!
A tough question for you... Once upon a time in the Mailbag section somebody sent in an homebrew device which only purpose was...
picking up EMI from electric/electronic appliances!
Sorry I'm unable to provide any more info... I just remember that this cute gadget could tune in on EMI by swiping it all over the device under test!
I'm into electronic music and from time to time - in my earphones - I can barely hear this noises that sometimes has excellent rhytmical features!
Unfortunately I can't amplify them enough to be usable in my "choons"!
Sounds weird, huh?  :-/O
I'd love to buy the kit to build that!!
Have a nice day,
Francesco
frozenfrogz:
H-field probe into a suitable instrumentation amplifier maybe?
Check Daves videos from one / two weeks ago where he DIYs one of those from coax and recommends a decently cheap amp.
SGI:
I'll check that!
Maybe Dave himself would remember?
Or the creator of the instrument??
Cheers
magic:
Frankly, you could just record it from the headphone jack of whatever device you have which picks it up.
Fire Doger:


https://www.eevblog.com/forum/blog/eevblog-1178-build-a-$10-diy-emc-probe/

Are you referring to noises similar with the sounds made when you make a call near a cheap speaker?
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